CN209088837U - A kind of dynamic head patch type piezoelectric oscillator of double cropping - Google Patents
A kind of dynamic head patch type piezoelectric oscillator of double cropping Download PDFInfo
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- CN209088837U CN209088837U CN201821868751.5U CN201821868751U CN209088837U CN 209088837 U CN209088837 U CN 209088837U CN 201821868751 U CN201821868751 U CN 201821868751U CN 209088837 U CN209088837 U CN 209088837U
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- walking beam
- piezoelectric ceramic
- walking
- actuation head
- actuation
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- 238000009355 double cropping Methods 0.000 title claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000011159 matrix material Substances 0.000 claims abstract description 14
- 230000010287 polarization Effects 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000012163 sequencing technique Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of double croppings to move head patch type piezoelectric oscillator, including metallic matrix and four piezoelectric ceramic pieces.Metallic matrix includes two actuation heads, two walking beams and clamping device.Two actuation heads are in single hole arch bridge shape；The both ends of one actuation head are connected with one end of two walking beams respectively, and the both ends of another actuation head are connected with the other end of two walking beams respectively；Clamping device is arranged between two walking beams, four piezoelectric ceramic pieces are respectively adhered on two sides of the first walking beam, the second walking beam, equal through-thickness polarization, and the polarization direction for the piezoelectric ceramic piece being located on same walking beam it is opposite, positioned at the piezoelectric ceramic piece of the same side polarization direction it is identical.When work, piezoelectric ceramic piece is motivated, so that with the longitudinal vibration mode and Lateral Vibration Modal of 90 degree of phase differences in two actuation head generation times, so that two actuation head upper surface particles generate and turn to opposite elliptic motion a little.
Description
Technical field
The utility model relates to piezoelectric actuating and ultrasound electric machine fields more particularly to a kind of double cropping to move the vibration of head patch type piezoelectric
Son.
Background technique
The matter of utmost importance and it is critical that the selection of piezoelectric vibrator mode and plan that piezoelectric actuator designs.It utilizes
Mode change, the structure of piezoelectric vibrator, the applying mode of precompression, piezoelectric actuator output performance can also change
Become.Reasonable mode selection can make piezoelectric vibrator light structure, precompression apply simple, piezoelectric actuator output performance and be promoted.
The patent of grant number CN102882423, utility model entitled " composite bending vibration biped rotary ultrasonic motor oscillator ",
Propose a kind of biped sandwich piezoelectric vibrator coupled using odd-order and even-order bending vibration.Suitable electric signal excitation and
In the case that odd number, even-order bending vibration frequency reach unanimity, the biped of piezoelectric vibrator, which can generate, turns to opposite elliptic motion.
But the node of odd number, even-order bending vibration has no coincidence place, this is totally unfavorable to the design of clamping device.Although using
Thin walled beam structure is as resilient support, but it must have an impact at least one driven-mode.Simultaneously it is also possible to there is dismounting
Afterwards before and after piezoelectric actuator the problem of performance inconsistent poor reliability.
Utility model content
Technical problem to be solved in the utility model is provided a kind of double for defect involved in background technique
Actuation head patch type piezoelectric oscillator.
The utility model is to solve the technical problem to use following technical scheme:
A kind of dynamic head patch type piezoelectric oscillator of double cropping, includes metallic matrix and four piezoelectric ceramic pieces；
The metallic matrix includes the first actuation head, the second actuation head, the first walking beam, the second walking beam and clamping machine
Structure；
First walking beam, the second walking beam are cuboid, include first to fourth side；First vibration
The first side of beam, the third side of the first walking beam, the first side of the second walking beam, the third side phase of the second walking beam
It is mutually parallel；The second side of first walking beam and the second side of the second walking beam are in same plane, and the 4th of the first walking beam the
Side and the 4th side of the second walking beam are in same plane；
The first actuation head, the second actuation head are in single hole arch bridge shape；The both ends of first actuation head shake with first respectively
One end of dynamic beam, one end of the second walking beam are connected；The both ends of second actuation head respectively with the other end of the first walking beam, second
The other end of walking beam is connected；
The clamping device be arranged in the third side of first walking beam, the second walking beam first side between,
It include orthogonal first panel and second panel in cruciformity；The first panel both ends respectively with the first walking beam
Third side, the second walking beam first side be vertically connected；Axis is perpendicular to first there are two setting in the second panel
The mounting hole of walking beam second side；
The metallic matrix is centrosymmetric about the center of the clamping device；
Four piezoelectric ceramic pieces are respectively adhered on the 4th side of the second side of the first walking beam, the first walking beam
Face, the second side of the second walking beam and the second walking beam the 4th side, equal through-thickness polarization, and be located at same vibration
The polarization direction of piezoelectric ceramic piece on beam is opposite, the polarization direction of piezoelectric ceramic piece in the same plane is identical.
The invention also discloses the working methods that the double cropping moves head patch type piezoelectric oscillator, include following mistake
Journey:
First signal is applied to two piezoelectric ceramic pieces on the first walking beam, is made pottery to two piezoelectricity on the second walking beam
Tile applies second signal, and the first signal, second signal differ pi/2 on time phase, so that the first actuation head, the second actuation
Longitudinal vibration mode and Lateral Vibration Modal with 90 degree of phase differences in head generation time, so that the first actuation head, the
Two actuation head upper surface particles generate elliptic motion a little, and the first actuation head, the second actuation head upper surface particle are oval a little
The steering of movement is opposite；
By changing the sequencing of the time phase difference of the first signal, second signal, change the first actuation head upper surface
The steering of particle elliptic motion a little.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
It is opened on cross type clamping device there are two symmetrical through-hole, keeps clamping more reliable.Piezoelectric vibrator is driven using friction
Turn, rotor can also give one reaction force of oscillator.If fixed using single-pass hole, piezoelectric vibrator very may be used during the work time
The case where fastener loosens can be will appear.
The utility model is difficult there is no the assembly of sandwich oscillator and the inaccurate problem of tools for bolts ' pretension, the sandwich that compares are shaken
Son, the utility model structure are more simple, light and handy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of metallic matrix in the utility model；
Fig. 3 is piezoelectric ceramic piece polarization direction and application electric signal schematic diagram in the utility model；
The schematic diagram of first, second actuation head longitudinal vibration mode when Fig. 4 is utility model works；
The schematic diagram of first, second actuation head Lateral Vibration Modal when Fig. 5 is utility model works；
State change schematic diagram when Fig. 6 is utility model works.
In figure, 1- metallic matrix, 2- piezoelectric ceramic piece, 1.1- the first actuation head, the second walking beam of 1.2-, 1.3- clamping machine
Structure.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, the utility model discloses a kind of double croppings to move head patch type piezoelectric oscillator, it include metallic matrix and four
A piezoelectric ceramic piece.
As shown in Fig. 2, metallic matrix includes the first actuation head, the second actuation head, the first walking beam, the second walking beam and folder
Hold mechanism.
First walking beam, the second walking beam are cuboid, include first to fourth side；The first of first walking beam
Side, the third side of the first walking beam, the first side of the second walking beam, the second walking beam third side be parallel to each other；
The second side of first walking beam and the second side of the second walking beam are in same plane, the 4th side of the first walking beam and
4th side of two walking beams is in same plane.
First actuation head, the second actuation head are in single hole arch bridge shape；The both ends of first actuation head respectively with the first walking beam
One end, the second walking beam one end be connected；The both ends of second actuation head are vibrated with the other end of the first walking beam, second respectively
The other end of beam is connected.
Clamping device be arranged in the third side of the first walking beam, the second walking beam first side between, be in cross
Shape includes orthogonal first panel and second panel；First panel both ends respectively with the third side of the first walking beam,
The first side of two walking beams is vertically connected；The peace there are two axis perpendicular to the first walking beam second side is set in second panel
Fill hole.
Metallic matrix is centrosymmetric about the center of clamping device.Clamping device moves head patch type pressure for fixing double cropping
Electric tachometer indicator.Metallic matrix can be integrally formed.
Four piezoelectric ceramic pieces are respectively adhered on the second side of the first walking beam, the 4th side of the first walking beam,
4th side of the second side of two walking beams and the second walking beam, as shown in figure 3, four equal through-thickness of piezoelectric ceramic piece
Opposite, the in the same plane piezoelectric ceramic piece of the polarization direction for the piezoelectric ceramic piece for polarizing, and being located on same walking beam
Polarization direction it is identical.
The invention also discloses the working methods that double cropping moves head patch type piezoelectric oscillator, include following procedure:
As shown in Fig. 4, Fig. 5, Fig. 6, the first signal is applied to two piezoelectric ceramic pieces on the first walking beam, is shaken to second
Two piezoelectric ceramic pieces on dynamic beam apply second signal, and the first signal, second signal differ pi/2 on time phase, so that
There is the longitudinal vibration mode and Lateral Vibration Modal of 90 degree of phase differences on first actuation head, the second actuation head generation time, into
And the first actuation head, the second actuation head upper surface particle is made to generate elliptic motion a little, and the first actuation head, the second actuation head
The steering of upper surface particle elliptic motion a little is opposite；
By changing the sequencing of the time phase difference of the first signal, second signal, change the first actuation head upper surface
The steering of particle elliptic motion a little.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of double cropping moves head patch type piezoelectric oscillator, which is characterized in that include metallic matrix and four piezoelectric ceramic pieces；
The metallic matrix includes the first actuation head, the second actuation head, the first walking beam, the second walking beam and clamping device；
First walking beam, the second walking beam are cuboid, include first to fourth side；First walking beam
First side, the third side of the first walking beam, the first side of the second walking beam, the third side of the second walking beam are mutually flat
Row；The second side of first walking beam and the second side of the second walking beam are in same plane, the 4th side of the first walking beam
The 4th side with the second walking beam is in same plane；
The first actuation head, the second actuation head are in single hole arch bridge shape；The both ends of first actuation head respectively with the first walking beam
One end, the second walking beam one end be connected；The both ends of second actuation head are vibrated with the other end of the first walking beam, second respectively
The other end of beam is connected；
The clamping device be arranged in the third side of first walking beam, the second walking beam first side between, be in ten
Cabinet frame shape includes orthogonal first panel and second panel；The first panel both ends respectively with the first walking beam
Three sides, the second walking beam first side be vertically connected；Axis is perpendicular to the first vibration there are two setting in the second panel
The mounting hole of beam second side；
The metallic matrix is centrosymmetric about the center of the clamping device；
Four piezoelectric ceramic pieces are respectively adhered on the second side of the first walking beam, the 4th side of the first walking beam,
4th side of the second side of two walking beams and the second walking beam, equal through-thickness polarization, and be located on same walking beam
Piezoelectric ceramic piece opposite, the in the same plane piezoelectric ceramic piece of polarization direction polarization direction it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821868751.5U CN209088837U (en) | 2018-11-14 | 2018-11-14 | A kind of dynamic head patch type piezoelectric oscillator of double cropping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821868751.5U CN209088837U (en) | 2018-11-14 | 2018-11-14 | A kind of dynamic head patch type piezoelectric oscillator of double cropping |
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| Publication Number | Publication Date |
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| CN209088837U true CN209088837U (en) | 2019-07-09 |
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|---|---|---|---|
| CN201821868751.5U Expired - Fee Related CN209088837U (en) | 2018-11-14 | 2018-11-14 | A kind of dynamic head patch type piezoelectric oscillator of double cropping |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378993A (en) * | 2018-11-14 | 2019-02-22 | 南京航空航天大学 | A kind of double cropping moves head patch type piezoelectric oscillator and its working method |
| CN110492785A (en) * | 2019-08-09 | 2019-11-22 | 南京航空航天大学 | A kind of rotary-type ultrasound electric machine of rood beam and its control method |
-
2018
- 2018-11-14 CN CN201821868751.5U patent/CN209088837U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378993A (en) * | 2018-11-14 | 2019-02-22 | 南京航空航天大学 | A kind of double cropping moves head patch type piezoelectric oscillator and its working method |
| CN109378993B (en) * | 2018-11-14 | 2024-03-19 | 南京航空航天大学 | Double-actuator patch type piezoelectric vibrator and working method thereof |
| CN110492785A (en) * | 2019-08-09 | 2019-11-22 | 南京航空航天大学 | A kind of rotary-type ultrasound electric machine of rood beam and its control method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 |